The term “280E” seems to play on repeat from the mouths of every cannabis specialized accountant. Denying ordinary business deductions to cannabis operators (solely because their business is classified as “trafficking in controlled substances”) has led to effective tax rates that can exceed 70%. But now, a new legal challenge has emerged that could open the door for eliminating 280E altogether for state-legal operators. At the heart of this issue is a fundamental constitutional argument: that taxing gross receipts without regard to expenses is neither GAAP-compliant nor constitutionally permissible under the Sixteenth Amendment. And the implications for cannabis operators and their CPAs are enormous.
The Accounting Problem: Gross Receipts ≠ Income
Let’s start with what we know from an accounting perspective. GAAP (Generally Accepted Accounting Principles) is clear: income is calculated as revenues less the expenses incurred to generate those revenues. This concept of “income as gain” is also deeply rooted in tax law. Even the IRS, outside of cannabis, aligns with this framework. But under 280E, cannabis businesses are forced to ignore most ordinary and necessary business expenses (salaries, rent, marketing, you name it) leaving only cost of goods sold (COGS) as deductible. The result? Businesses are taxed not on income, but on gross receipts. That’s not just bad accounting; it’s potentially unconstitutional.
Under the Sixteenth Amendment, Congress only has the power to levy income taxes. Not sales taxes disguised as income taxes. Not gross margin taxes. Just income taxes. And as the U.S. Supreme Court affirmed in Eisner v. Macomber, income for tax purposes means “gain derived from capital or labor.” If your cannabis client brings in $1 million in revenue and spends $900,000 running the business, but can only deduct $400,000 in COGS, they’re being taxed on $600,000 of phantom income. That’s not gain. That’s a federal tax fiction.
The Legal Theory: Commerce Clause Meets Cannabis
Now let’s shift from accounting to constitutional law. The federal government justifies 280E through the Controlled Substances Act (CSA), which in turn rests on Congress’s authority under the Commerce Clause. But that power has limits, especially when applied to state-legal, purely intrastate activity. A new case, Canna Provisions v. Garland, is directly challenging this foundation. The plaintiffs argue that applying the CSA (and by extension 280E) to local cannabis businesses exceeds Congress’s power under the Commerce Clause. They argue the landscape has changed since Gonzales v. Raich, the 2005 Supreme Court case that upheld federal marijuana laws. And they may have a point.
Since Raich, 38 states have legalized cannabis in some form. State-legal cannabis is tightly tracked, highly regulated, and non-fungible unlike the homegrown pot of 2005. As Justice Thomas put it in Standing Akimbo v. United States, the federal government’s “half-in, half-out” approach to cannabis is no longer rational. The Rohrabacher-Farr Amendment, renewed annually by Congress, prevents DOJ funds from being used to prosecute state-legal cannabis activity. If federal criminal enforcement is no longer viable, how can civil tax enforcement, especially one that violates constitutional definitions of income, still be justified?
The Strategic Play: Reasonable Basis, Refund Claims, and Disclosures
So what do accountants do in the meantime? One option is filing amended returns with refund claims, asserting a “reasonable basis” for the position that 280E doesn’t apply. Under IRC §6662, if a tax position is based on a reasonable legal argument and properly disclosed (usually via IRS Form 8275), accuracy-related penalties may be avoided even if the IRS ultimately disagrees.
This isn’t a loophole. It’s a suggested tax position backed by constitutional law, legal opinions, and ongoing litigation. CPAs supporting clients in this process must document the rationale clearly, maintain full support for COGS calculations, and track pending court decisions like Canna Provisions. If the courts eventually find 280E unconstitutional as applied to state-legal cannabis, properly filed refund claims could lead to substantial recoveries.
Don’t Forget FIN 48: Disclosing Uncertain Tax Positions
For GAAP-compliant cannabis operators, the implications of this legal theory don’t stop at refund claims. They extend to financial reporting under ASC 740-10 (formerly FIN 48). Any entity asserting that §280E does not apply due to constitutional or legal challenges must evaluate whether this position meets the “more-likely-than-not” threshold to be recognized in their financial statements. If it doesn’t, the company must disclose the uncertain tax position and recognize a liability for the amount that may ultimately not be sustained upon examination.
This means carefully documenting the legal basis, monitoring litigation developments, and quantifying potential exposure. For firms preparing audited financials or pursuing investment, transparency around these positions is essential, not just for compliance but for building trust with stakeholders. High Rock can help you assess and disclose these positions properly, keeping your accounting airtight and investor-ready.
Final Thought: Prepare for Change, Fast
The cannabis industry has lived under the shadow of 280E for more than 40 years. But that shadow may be fading. Whether through a Supreme Court ruling, Congressional/Presidential action, or a shift in IRS enforcement priorities, the foundation of 280E is at least showing a few cracks. And when it goes, it won’t just be about future tax returns. It will open the door to retroactive refunds, amended financials, revalued deferred tax assets, and completely new strategic planning.
Accountants who understand this shift (and prepare clients accordingly) will be invaluable. Those who don’t may find themselves playing catch-up in a post-280E world. Want to get ahead of it? Start documenting now. Start modeling refund scenarios. Start watching the courts. Because the next chapter in cannabis accounting is already being written, and if the Sixteenth Amendment has anything to say about it, that chapter won’t include 280E.
Navigating 280E? High Rock Is on Your Side
At High Rock Accounting, we know that 280E isn’t just a tax rule. It’s a strategic hurdle that impacts every decision a cannabis operator makes. We help clients go beyond compliance to explore forward-thinking tax strategies, build defensible positions, and model refund opportunities with clarity and confidence. And now, as constitutional challenges to 280E gain momentum, we’re staying one step ahead so you don’t have to scramble when the rules change.
If you’re rethinking how 280E applies to your business or you’re curious about preparing for a post-280E future, our team is here to help you evaluate your options, file protective claims, and plan proactively.
👉 Learn more at www.highrock.co or reach out directly at contact@highrock.co to schedule a strategic consult.
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